As for the rest, I'm pretty sure you just came here to troll so I'm going to be placing you on my ignore list if I get any more inane social commentary...

So you're answer to the question "Would you care to elaborate on what the GM1 can do that many DSLRs can't?" is to first not answer the question and then accuse me of trolling when I react negatively to your almost completely pointless response.

Feel free to add me to your ignore list, it's pretty clear than you add no value to this conversation so I'd not want you to bother reading anything I say.

In addition to size and weight (which are not trivial matters) I already gave another answer to your question: fast and exact focus, as long as you're not tracking movement. The annoyance and unreliability of AF micro-adjustment is one reason I find myself sometimes reaching for my GX7 when my 5DIII would otherwise be a better choice. Movement tracking will eventually be solved with on-sensor PDAF pixels and statistical analysis of the image blur -- see EM1 and GH4. But, again, this conversation is silly: yes, image quality differences are irrelevant for all practical purposes for almost everyone and, no, neither can fully replace the other for all uses.